Banana knife



FIG. 1 is a perspective view of a banana knife showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view thereof, the opposite side beingidentical;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a banana knife, as shown and described.